Milk-aerator.



PATENTED MAY 19,1903.

J. A. TRENTLAGE.

MILK AERATOR. v

APPLIOATION FILE-D JUNE 18, 1902., 7

N0 MODEL.

WITNESSES:

1N VEN TOR.

. a BY 6 T K A A TTORNE UNITED STATES Patented May '19, 1903.

PATENT OFFICE.

MlLK-AER'ATO R.

SPECIFICATION forming part of Letters Patent No. 728,334, dated May 19, 1903.

Application filed June 18, 1902. SerialNo. I12,198. (No model.)

aerating milk; and it consists in certain pe-' culiarities of construction and combination of parts, to be hereinafter setforth with ref-' erence to the accompanying drawings and subsequently claimed. 7

In the drawings, Figure 1 represents a side elevation, partly in section. Fig; 2 is a horizontalsectional View on line 2 2 of Fig. 1."

Fig. 3 is a perspective view of the handle, showing the spring-catch.

Referring by letter to the drawings, A is a; conical-shaped cup having a socket B for the purpose of receiving ahandle' G. Said'h'a'ndle may be made of any desired material;

The cup A has its largest diameter at the bottom and is open at that end, the top where it joins the socket being closed by a partition.

Close to the top of the cup A are a series of per-.

forations F. Upon the outside of said cup and rigidly secured thereto are strips D, having upturned, edges and forming grooves A for receiving a removable air-ductC, The

said air-ductbeing open at its bottomand closed at its top,- is constructed so that fric tion will hold it from dropping down when in use, and astop 11, formed by closing the groove A at its upper edge, prevents the said airduct from pushing too far up. Said strips D have openings E'in their upper ends to correspond with the opening-in the cup A, as shown in Fig. 2, only they may be larger in order to admit of fastening them together. The socket B is provided with openings J, into which snap the springs I of the handle G. The springs I are secured in a cut-out portion of handle G by means of screws a and The operation of my device is as follows: The aerator is submerged into a can of milk to approximately-a point at or near its bottom, and by so doing it is obvious that the cup A will carry down with it a volume of air, which will be slightly compressed by the milk which will enter its mouth, and thereby prevent said cup from filling with milk until the air has entirely escaped, which will not happen until the cup has been lowered to a certaindepth, when the milk-pressure so compresses the air in the cup A as to overcome the resistance in the air-ducts and forces the air through the perforations F and ducts C, percolating through the entire body of milk. This operation is repeated until the entire body of "the milk is cooled.

The principal advantage I claim for my invention is in having the removable airducts so that the machine may be thoroughly cleaned.

, Having thusdescri bed my invention, what I claim as new, and desire to secure by Letters Patent, is

In a milk-aerator, a conical-shaped cup, and I a handle therefor, strips rigidly secured to the sides of said cup, air-ducts for removable engagement with said strips, means for per- .mittingair to pass from the inside of said oup' through said ducts.

In testimony whereof I affix my signature in presence of two witnesses.

JAY ANDRENTLAGE.

Witnesses:

EARL PETERSON, L. A. THOMPSON. 

